confusion
The word is conversation.
conform is a synonym for reconcile
conquer
consequence
A synonym for liar that starts with "c" is "deceiver."
The prefix in the word "confide" is "con-," which means "with" or "together."
The prefix for the word "consisted" is "con-", which means "together" or "with".
The word "con" means "with" in English, and the word "sordina" means "mute". So, the phrase con sordina means that the music is to be played "with a mute". This could be a mute on your trumpet, violin, drums, etc. Similar uses of "con": "con anima" means with spirit, "con fuoco" means with fire
Con man
I can only think of one stem in the word "concussion" which is "con". Con means together.
contractCongeal
The prefix "con-" in the middle of a word typically means "together" or "with." It is often used to indicate bringing things or people together, such as in the words "connect" or "converge."